Effects of RNA interference-induced tryptase down-regulation in P815 cells on IL-6 and TNF-alpha release of endothelial cells

OBJECTIVE: To explore the effects of down-regulated tryptase expression in mast cells on the synthesis and release of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) of vascular endothelial cells.

METHODS: Tryptase-siRNA (small-interfering RNA) vector was constructed to inhibit tryptase expression in P815 cells. The medium of P815 cells treated by the tryptase-siRNA (RNAi-P815 group) or pure vector (P815 group) was collected and used to culture bEnd.3 cells. The messenger RNAs (mRNAs) of IL-6 and TNF-alpha in bEnd.3 cells and their protein levels in the medium were measured by reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively.

RESULTS: IL-6 and TNF-alpha mRNAs in bEnd.3 cells cultured in RNAi-P815-conditioned medium decreased significantly compared to those in P815-conditioned medium. Consistently, IL-6 and TNF-alpha protein levels in the medium of bEnd.3 of RNAi-P815 group were lower than those of P815 group.

CONCLUSION: Reduced tryptase expression significantly inhibited the synthesis and release of IL-6 and TNF-alpha in vascular endothelial cells. RNA interference targeting tryptase expression may be a new anti-inflammatory strategy for vascular diseases.

Medienart:

E-Artikel

Erscheinungsjahr:

2008

Erschienen:

2008

Enthalten in:

Zur Gesamtaufnahme - volume:9

Enthalten in:

Journal of Zhejiang University. Science. B - 9(2008), 8 vom: 28. Aug., Seite 656-61

Sprache:

Englisch

Beteiligte Personen:

Jiang, Yi-feng [VerfasserIn]
Zhao, Feng-di [VerfasserIn]
Li, Xiao-bo [VerfasserIn]
Ning, Yan-xia [VerfasserIn]
Zhi, Xiu-ling [VerfasserIn]
Qian, Rui-zhe [VerfasserIn]
Yin, Lian-hua [VerfasserIn]

Links:

Volltext

Themen:

Culture Media, Conditioned
EC 3.4.21.59
Interleukin-6
Journal Article
RNA, Messenger
RNA, Small Interfering
Research Support, Non-U.S. Gov't
Tryptases
Tumor Necrosis Factor-alpha

Anmerkungen:

Date Completed 19.02.2009

Date Revised 20.10.2021

published: Print

Citation Status MEDLINE

doi:

10.1631/jzus.B0810188

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM182159531